Patents by Inventor Lidan Qin

Lidan Qin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11438549
    Abstract: A videoconferencing endpoint is described that uses a combination of face detection, motion detection, and upper body detection for selecting participants of a videoconference for group framing. Motion detection is used to remove fake faces as well as to detect motion in regions around detected faces during postprocessing. Upper body detection is used in conjunction with the motion detection in postprocessing to allow saving faces that have been initially detected by face detection for group framing even if the participant has turned away from the camera, allowing the endpoint to keep tracking the participants region better than would be possible based only on an unstable result coming from face detection.
    Type: Grant
    Filed: November 22, 2018
    Date of Patent: September 6, 2022
    Assignee: POLY, INC.
    Inventors: Tianran Wang, Wenxue He, Lidan Qin, Hai Xu
  • Publication number: 20220006974
    Abstract: A videoconferencing endpoint is described that uses a combination of face detection, motion detection, and upper body detection for selecting participants of a videoconference for group framing. Motion detection is used to remove fake faces as well as to detect motion in regions around detected faces during postprocessing. Upper body detection is used in conjunction with the motion detection in postprocessing to allow saving faces that have been initially detected by face detection for group framing even if the participant has turned away from the camera, allowing the endpoint to keep tracking the participants region better than would be possible based only on an unstable result coming from face detection.
    Type: Application
    Filed: November 22, 2018
    Publication date: January 6, 2022
    Inventors: Tianran Wang, Wenxue He, Lidan Qin, Hai Xu
  • Patent number: 10863112
    Abstract: A method may include receiving a source video frame captured using a wide angle lens, deriving a characteristic of a target video frame from the source video frame, generating a transitional video frame using the source video frame and the target video frame, and transmitting the transitional video frame to an endpoint.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: December 8, 2020
    Assignee: Plantronics, Inc.
    Inventors: Wenxue He, Hai Xu, Lidan Qin, Yongkang Fan